The sleeveless number screams '90s! Really, when is the last time you've even heard the term mock-neck? There's no doubt you could walk into any thrift store at this very moment and find at least 5 of these babies on the racks. Perhaps even some cropped options, or (gasp!) a full turtleneck version.

Take a look at how these two took very different approaches to the same trend, which do you prefer?